Which of the following waves requires a material medium for its propagation?
PHYSICS
WAEC 2020
Which of the following waves requires a material medium for its propagation?
- A. Radio waves
- B. Light waves
- C. Sound waves
- D. X-rays
Correct Answer: C. Sound waves
Explanation
- Electromagnetic waves are waves that have no medium to travel whereas mechanical waves need a medium for its transmission.
- sound wave is an example of a mechanical wave. Sound waves are incapable of traveling through a vacuum.
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